If your vision is less than optimal after LASIK surgery, you might be able to improve it further with a LASIK enhancement.
This is a follow-up LASIK procedure that is performed when residual refractive errors remain after the primary LASIK surgery, causing blurred vision.
Typically, LASIK surgeons recommend waiting at least three months after a primary LASIK surgery before considering an enhancement surgery. This is to make sure the eye is fully healed after the first surgery and your vision is stable and no further improvement is likely.
In most cases when a LASIK enhancement is performed, the corneal flap from the first procedure is surgically lifted and the additional laser treatment is applied. This lifting of the existing flap usually is performed using hand-held surgical tools rather than a laser.
There is a greater risk of flap-related complications following a LASIK enhancement compared with a primary LASIK procedure, so your surgeon will weigh the potential benefits of the enhancement with this in mind.
To reduce the risk of flap-related complications, your surgeon may recommend PRK laser vision correction for an enhancement rather than performing a second LASIK procedure. With PRK, the laser retreatment is applied directly to the surface of the eye, so the original LASIK flap doesn't need to be lifted. Healing after PRK takes slightly more time, however.
When considering additional surgery to improve your vision after LASIK, be sure to discuss the additional risks of enhancement surgery with your refractive surgeon before proceeding.